Mbone Tunnels of the Major Backbone Networks Tamara MunznerStanford University Eric Hoffman Ipsilon Networks kc claffy CAIDA at SDSC Bill Fenner Xerox PARC URL: http://www-graphics.stanford.edu/papers/mbone/ Visualization Thumbnail Credits / Contact Info Authors: Visualization Tools by Tamara Munzner and Eric Hoffman Mbone Router Tools and Data by Bill Fenner Data Analysis by Tamara Munzner and kc claffy Contact Info: For further information, send email to: munzner @ cs.stanford.edu Full-Size Visualization Back

Mbone Tunnels of the Major Backbone Networks Tamara MunznerStanford University Eric Hoffman Ipsilon Networks kc claffy CAIDA at SDSC Bill Fenner Xerox PARC URL: http://www-graphics.stanford.edu/papers/mbone/ Visualization Thumbnail About the Data Data Sources: (Source1): Mbone router data (collected from IGMP messages by mrinfo tool by Bill Fenner) for June 1996. Consists of some of MCI and all of Dartnet. (Source2): Cambridge map file from June 1996. Data generated by mwatch mbone monitoring program (Piet Brooks, University of Cambridge), but monitoring has since ceased due to a change in UKERNA's billing policy.

Mbone Tunnels of the Major Backbone Networks Tamara MunznerStanford University Eric Hoffman Ipsilon Networks kc claffy CAIDA at SDSC Bill Fenner Xerox PARC URL: http://www-graphics.stanford.edu/papers/mbone/ Visualization Thumbnail Evaluation Alternate Visualization Technique (Click image for full-size version.) Strengths: (Strength1): Data format supports animations as well as interaction via a VRML browser. Clicking on a tunnel in the VRML 3D scene triggers the display of hypertext information about its endpoints. (Strength2): Useful for the detection of anomalies and problems in the distribution framework.

Mbone Tunnels of the Major Backbone Networks Tamara MunznerStanford University Eric Hoffman Ipsilon Networks kc claffy CAIDA at SDSC Bill Fenner Xerox PARC URL: http://www-graphics.stanford.edu/papers/mbone/ Visualization Thumbnail About the Visualization Visualization Techniques: (Technique1): Convert machine-readable mrinfo data into NDP format. (Technique2): Add latitude and longitude to hostnames in the NDP file using hostresolve.perl (based on hostnames) and trim_bidirect (based on IP address) tools. (Technique3): Computer the shortest geodesic arc between lat/longs of the endpoints of each tunnel.